Marking on Airweight - Pic included

S

Shadi Khalil

New member
I just noticed the three digit (poorly done) marking on my 637 and I've never noticed it before. What are they there for?
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I must have been thinking of my GP100...
I could have sworn my 642 had the last three of the serial number on the crane. But, it doesn't.

S&W 642 LadySmith, crane laser etched with "067". (not even close to the serial number)
 
I've wondered that myself, and I found this on the Smith & Wesson forum.

Properly they are referred to as assembly numbers with S&W. This is the generally 5 digit number that is found on the yoke, on the frame, and inside the sideplate. They identify these parts as a set that have been precisely fit and polished as an assembly so the joints match closely and are aesthetically pleasing. During final assembly it is used to rematch these parts that were separated after polishing and are delivered to the fitter as a tray containing sufficient parts to assemble 10 revolvers. It assures the fitter matches the correct yoke and sideplate to the frame they were fit to. Once the gun is put up they no longer serve any purpose. They are not recorded or tracked by this number in any way as would be the case with a "control number".
Click to expand...

Makes sense to me. I've found them on all my SW revolvers and they never have any similarity to the serial number.
 
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